AU545886B2 - Echo canceller - Google Patents

Echo canceller

Info

Publication number
AU545886B2
AU545886B2 AU68714/81A AU6871481A AU545886B2 AU 545886 B2 AU545886 B2 AU 545886B2 AU 68714/81 A AU68714/81 A AU 68714/81A AU 6871481 A AU6871481 A AU 6871481A AU 545886 B2 AU545886 B2 AU 545886B2
Authority
AU
Australia
Prior art keywords
echo canceller
canceller
echo
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU68714/81A
Other versions
AU6871481A (en
Inventor
Loic Bernard Yves Guidoux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
T.R.T.
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Publication of AU6871481A publication Critical patent/AU6871481A/en
Application granted granted Critical
Publication of AU545886B2 publication Critical patent/AU545886B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/232—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using phase shift, phase roll or frequency offset correction
AU68714/81A 1980-03-26 1981-03-25 Echo canceller Ceased AU545886B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8006748 1980-03-26
FR8006748A FR2479617A1 (en) 1980-03-26 1980-03-26 ECHO CANCELLATOR FOR ECHO SIGNAL WITH VARIABLE PHASE

Publications (2)

Publication Number Publication Date
AU6871481A AU6871481A (en) 1981-10-01
AU545886B2 true AU545886B2 (en) 1985-08-08

Family

ID=9240140

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68714/81A Ceased AU545886B2 (en) 1980-03-26 1981-03-25 Echo canceller

Country Status (5)

Country Link
EP (1) EP0036696A1 (en)
JP (1) JPS56149832A (en)
AU (1) AU545886B2 (en)
CA (1) CA1181146A (en)
FR (1) FR2479617A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU601104B2 (en) * 1988-03-17 1990-08-30 Fujitsu Limited Echo canceller
AU632662B2 (en) * 1990-01-10 1993-01-07 Motorola, Inc. Echo canceller

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487144B1 (en) * 1980-07-21 1986-10-24 Trt Telecom Radio Electr DEVICE FOR CANCELING A COMPOSITE ECHO SIGNAL
SE426765B (en) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab FIR-TYPE BALANCE FILTER INCLUDED IN THE SENDAR RECEIVER UNIT IN A TELECOMMUNICATION SYSTEM
FR2528643A1 (en) * 1982-06-14 1983-12-16 Trt Telecom Radio Electr METHOD FOR REDUCING THE CONVERGENCE TIME OF AN ECHO CANCER AND DEVICE USED FOR CARRYING OUT SAID METHOD
EP0270706B1 (en) * 1982-06-14 1993-03-24 Telecommunications Radioelectriques Et Telephoniques T.R.T. Method of reducing the convergence time of an echo canceller
FR2546693B1 (en) * 1983-05-26 1985-08-30 Centre Nat Rech Scient ECHO CANCER WITH ADAPTIVE DIGITAL FILTER FOR TRANSMISSION SYSTEM
DE3327467A1 (en) * 1983-07-29 1985-02-14 Siemens AG, 1000 Berlin und 8000 München METHOD AND CIRCUIT ARRANGEMENT FOR COMPENSATING ECHO SIGNALS
FR2556530B1 (en) * 1983-10-28 1986-04-04 Telediffusion Fse ECHO CORRECTION DEVICE, ESPECIALLY FOR A DATA BROADCASTING SYSTEM
FR2569322B1 (en) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr ECHO CANCELER USING DELTA MODULATION
US4682358A (en) * 1984-12-04 1987-07-21 American Telephone And Telegraph Company Echo canceller
NZ214905A (en) * 1985-01-29 1988-09-29 British Telecomm Noise cancellation by adaptive filter compensates for timing variations
DE3784490T2 (en) * 1987-04-22 1993-09-16 Ibm ECHOCOMPENSATION DEVICE WITH CORRECTION OF PHASE DEVIATIONS.
US4813073A (en) * 1987-07-02 1989-03-14 Codex Corporation Echo cancellation
FR2629293A1 (en) * 1988-03-25 1989-09-29 Trt Telecom Radio Electr ECHO CANCELLATOR FOR ECHO SIGNAL WITH VARIABLE PHASE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1403374A (en) * 1972-05-11 1975-08-28 Gkn Sankey Ltd Wheels
US3866977A (en) * 1972-05-17 1975-02-18 Goodyear Tire & Rubber Suppression of vibration in rotating discs
DE2833518A1 (en) * 1978-07-31 1980-02-21 Siemens Ag Adaptive echo compensator for asynchronous CW system - has frequency corrector containing two multipliers, Hilbert transformer, adder and voltage controlled oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU601104B2 (en) * 1988-03-17 1990-08-30 Fujitsu Limited Echo canceller
AU632662B2 (en) * 1990-01-10 1993-01-07 Motorola, Inc. Echo canceller

Also Published As

Publication number Publication date
AU6871481A (en) 1981-10-01
CA1181146A (en) 1985-01-15
FR2479617A1 (en) 1981-10-02
FR2479617B1 (en) 1983-10-21
JPS56149832A (en) 1981-11-19
EP0036696A1 (en) 1981-09-30

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